Positive Integers » 20001-30000 » 21301-21400 » 21391

Divisors of the Positive Integer 21391

1, 21391

Sum of all the Divisors of 21391, including itself

21392

Sum of the Proper Divisors of 21391

1

Properties of the number 21391

The integer 21391 is an odd number.
The integer 21391 is a Prime number.
1 is less than 21391, so 21391 is a deficient number.

The number 21391 as a Roman Numeral

_X_XMCCCXCI (Roman Numerals with underscores in front have their values increased by 1,000. The underscore represents a line over the numeral, because the Romans used overlines to multiply by 1,000.)

The number 21391 in various Numeral Systems

Base Representation
2:101001110001111
3:1002100021
4:11032033
5:1141031
6:243011
7:116236
8:51617
9:32307
10:21391
11:15087
12:10467
13:9976
14:7B1D
15:6511
16:538F
17:4605
18:3C07
19:324G
20:2D9B
21:26AD
22:2047
23:1HA1
24:1D37
25:195G
26:15GJ
27:1297
28:R7R
29:PCI
30:NN1
31:M81
32:KSF
33:JL7
34:IH5
35:HG6
36:GI7